++added:

Verifying host fingerprints
---------------------------

If you get a warning about a fingerprint change, you can check the host 
fingerprint your stored with::

 ssh-keygen -l -f ~/.ssh/known_hosts | grep cvs.sv.gnu.org
 1024 80:5a:b0:0c:ec:93:66:29:49:7e:04:2b:fd:ba:2c:d5 cvs.sv.gnu.org

or if your known_hosts file is hashed::

 $ ssh-keygen -F cvs.sv.gnu.org > tmpkey
 $ ssh-keygen -l -f tmpkey
 1024 80:5a:b0:0c:ec:93:66:29:49:7e:04:2b:fd:ba:2c:d5 
|1|/PZ6wITZ4GG+4XtGUy1FgzqaH8M=|uci92Jr08MGVxZAeofx2JHS/lfw=

To verify the keys currently in use at Savannah::

 $ ssh-keyscan -t rsa,dsa cvs.sv.gnu.org > tmpkey
 # cvs.sv.gnu.org SSH-2.0-OpenSSH_4.3p2 Debian-9
 # cvs.sv.gnu.org SSH-2.0-OpenSSH_4.3p2 Debian-9
 $ ssh-keygen -l -f tmpkey
 1024 4d:c8:dc:9a:99:96:ae:cc:ce:d3:2b:b0:a3:a4:95:a5 cvs.sv.gnu.org
 1024 80:5a:b0:0c:ec:93:66:29:49:7e:04:2b:fd:ba:2c:d5 cvs.sv.gnu.org


On the server-side (for Savannah Hackers)::

 [EMAIL PROTECTED]:/# ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key  
 1024 80:5a:b0:0c:ec:93:66:29:49:7e:04:2b:fd:ba:2c:d5 
/etc/ssh/ssh_host_rsa_key.pub
 [EMAIL PROTECTED]:/# ssh-keygen -l -f /etc/ssh/ssh_host_dsa_key
 1024 4d:c8:dc:9a:99:96:ae:cc:ce:d3:2b:b0:a3:a4:95:a5 
/etc/ssh/ssh_host_dsa_key.pub

--
forwarded from https://savannah.gnu.org/maintenance/[EMAIL 
PROTECTED]://savannah.gnu.org/maintenance


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